#include <iostream>

using namespace std;

int	main(int argc, char **argv)
{
  int a = 10, b = 20;

  int c;

  c = a + b;
  cout << "加法" << c << endl;

  c = b / a;
  cout << "除法" << c << endl;

  c = a - b;
  cout << "减法" << c << endl;

  c = a * b;
  cout << "乘法" << c << endl;

  a--;
  cout << "自减" << a << endl;

  b++;
  cout << "自加" << b << endl;

  c = b % a;
  cout << "取余" << c << endl;

  if (c == 3)
  {
    cout << "fuck" << c << endl;
  } else
  {
    cout << "fuck you" << c << endl;
  }

  // system("pause");
  return 0;
}
